C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 7/00 (2006.01)
Patent
CA 2712712
The invention relates to a carrier film, in particular for an adhesive tape, which is stretched monoaxially in the longitudinal direction and contains a layer made of polypropylene, characterized in that the tension of the carrier film in the longitudinal direction at 10% elongation is at least 150 N/mm , preferably at least 200 N/mm v, very particularly preferably at least 250 N/mm v , the layer contains a polypropylene polymer having a content of olefinic co- monomers of less than 2.5 wt.-%, preferably 0 wt.-%, the layer is not nucleated, and a separating lacquer is applied on one side of the layer.
L'invention concerne un film support, notamment pour bande adhésive, qui s'étend de manière monoaxiale dans le sens longitudinal et contient une couche à base de polypropylène. L'invention se caractérise en ce qu'à 10% d'extension, la tension du film support dans le sens longitudinal est d'au moins 150 N/mm2, de préférence d'au moins 200 N/mm2, plus particulièrement d'au moins 250 N/mm2. La couche contient un polymère polypropylène à teneur en comonomère oléfinique inférieure à 2,5% en poids, de préférence 0% en poids, ladite couche n'étant pas nucléée et une couche de vernis de séparation étant appliquée sur une face de ladite couche.
Michel Uwe
Muessig Bernhard
Gowling Lafleur Henderson Llp
Tesa Se
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